<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
<script> 
function setImagePreview() { 
var docObj=document.getElementById("doc"); 
var imgObjPreview=document.getElementById("preview"); 
if(docObj.files && docObj.files[0]){ 
//火狐下，直接设img属性 
imgObjPreview.style.display = 'block'; 
imgObjPreview.style.width = '300px'; 
imgObjPreview.style.height = '120px'; 
//imgObjPreview.src = docObj.files[0].getAsDataURL(); 
//火狐7以上版本不能用上面的getAsDataURL()方式获取，需要一下方式 
imgObjPreview.src = window.URL.createObjectURL(docObj.files[0]); 
}else{ 
//IE下，使用滤镜 
docObj.select(); 
var imgSrc = document.selection.createRange().text; 
var localImagId = document.getElementById("localImag"); 
alert("ss");
//必须设置初始大小 
localImagId.style.width = "250px"; 
localImagId.style.height = "200px"; 
//图片异常的捕捉，防止用户修改后缀来伪造图片 
try{ 
localImagId.style.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)"; 
localImagId.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgSrc; 
}catch(e){ 
alert("您上传的图片格式不正确，请重新选择!"); 
return false; 
} 
imgObjPreview.style.display = 'none'; 
document.selection.empty(); 
} 
return true; 
} 
</script> 
</head>
<body>
<input type=file name="doc" id="doc" onchange="javascript:setImagePreview();"> 
<div id="localImag"><img id="preview" width=-1 height=-1 style="diplay:none" /></div>

</body>
</html>